<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card class="box-card">
      <el-row :gutter="20">
        <el-col :span="8">
          <!-- 搜索与添加区域 -->
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配角色 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[2, 4, 6, 8, 10]"
        :page-size="100"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>
    <!-- 添加用户对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="30%" @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名:" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码:" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱:" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机:" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户对话框 -->
    <el-dialog
      title="修改用户信息"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <!-- 内容主体区域 -->
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名:">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱:" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机:" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%"
    @close='setRoleDialogClosed'>
      <p>当前用户：{{userInfo.username}}</p>
      <p>当前角色：{{userInfo.role_name}}</p>
      <p>
        分配新角色：
        <el-select v-model="selectedRoleId" placeholder="请选择">
          <el-option
            v-for="item in rolesList"
            :key="item.id"
            :label="item.roleName"
            :value="item.id"
          ></el-option>
        </el-select>
      </p>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>
export default {
  created() {
    this.getUserList()
  },
  data() {
    // 验证邮箱的规则
    var checkEmail = (rule, value, cb) => {
      // 验证邮箱的正则
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        // 合法邮箱
        return cb()
      } else {
        cb(new Error('请输入合法的邮箱'))
      }
    }
    // 验证手机号规则
    var checkMobile = (rule, value, cb) => {
      // 验证手机的正则
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0123456789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        // 合法手机
        return cb()
      } else {
        cb(new Error('请输入合法的手机号'))
      }
    }
    return {
      // 获取用户列表参数对象
      queryInfo: {
        query: '',
        // 当前页数
        pagenum: 1,
        // 当前每页显示数据条数
        pagesize: 2
      },
      userList: [],
      total: 0,
      // 控制添加用户对话框的显示和隐藏
      addDialogVisible: false,
      // 控制修改用户对话框的显示和隐藏
      editDialogVisible: false,
      // 添加用户表单数据
      addForm: {
        username: '',
        password: '',
        email: ''
      },
      // 查询到的用户信息数据
      editForm: {},
      // 添加表单验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名称', trigger: 'blur' },
          {
            min: 3,
            max: 10,
            message: '用户名长度在3到10个字符之间',
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          {
            min: 6,
            max: 15,
            message: '密码长度在6到15个字符之间',
            trigger: 'blur'
          }
        ],
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          {
            validator: checkEmail,
            trigger: 'blur'
          }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          {
            validator: checkMobile,
            trigger: 'blur'
          }
        ]
      },
      // 添加修改表单验证规则对象
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          {
            validator: checkEmail,
            trigger: 'blur'
          }
        ],
        mobile: [
          { required: true, message: '请输入手机号', trigger: 'blur' },
          {
            validator: checkMobile,
            trigger: 'blur'
          }
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      //用户选中的角色id
      selectedRoleId: ''
    }
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', {
        params: this.queryInfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户信息失败！')
      }
      this.userList = res.data.users
      this.total = res.data.total
      console.log(res)
    },
    // 监听 pagesize 改变事件
    handleSizeChange(newSize) {
      console.log(newSize)
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听 页码值 改变事件
    handleCurrentChange(newPage) {
      console.log(newPage)
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听switch状态的改变
    async userStateChanged(userinfo) {
      // console.log(userinfo)
      const { data: res } = await this.$http.put(
        `users/${userinfo.id}/state/${userinfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        userinfo.mg_state = !userinfo.mg_state
        return this.$message.error('更新用户信息状态失败')
      } else {
        return this.$message.success('更新用户信息状态成功')
      }
    },
    // 监听添加用户对话框的关闭事件
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 监听修改用户对话框的事件
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 添加新用户
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
          return
        } else {
          // 发起添加用户网络请求
          const { data: res } = await this.$http.post('users', this.addForm)
          if (res.meta.status !== 201) {
            this.$message.error('添加用户失败！')
          } else {
            this.$message.success('添加用户成功！')
            // 隐藏添加用户对话框
            this.addDialogVisible = false
            // 重新获取用户列表数据
            this.getUserList()
          }
        }
      })
    },
    // 展示编辑用户的对话框
    async showEditDialog(id) {
      this.editDialogVisible = true
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户失败！')
      } else {
        this.editForm = res.data
      }
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) {
          return
        } else {
          // 发起修改用户请求
          const { data: res } = await this.$http.put(
            'users/' + this.editForm.id,
            {
              email: this.editForm.email,
              mobile: this.editForm.mobile
            }
          )

          if (res.meta.status !== 200) {
            return this.$message.error('更新用户信息失败！')
          }
          // 关闭对话框
          this.editDialogVisible = false
          // 刷新数据列表
          this.getUserList()
          // 提示修改成功
          this.$message.success('更新用户信息成功！')
        }
      })
    },
    // 根据id删除对应信息
    async removeUserById(id) {
      //询问用户是否删除数据
      const confirmResult = await this.$confirm(
        '此操作将永久删除该用户, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      //如果用户确认 则返回 confirm , 如果用户取消，则返回cancle
      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消删除！')
      } else {
        // return this.$message.info('已经取消删除！')
        const { data: res } = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error('删除用户失败！')
        } else {
          this.getUserList()
          return this.$message.success('删除用户成功！')
        }
      }
    },
    // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo

      // 在展示对话框之前，获取所有角色的列表
      const { data: res } = await this.$http.get('roles')

      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }

      this.rolesList = res.data

      this.setRoleDialogVisible = true
    },
    //点击按钮分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色')
      } else {
        const { data: res } = await this.$http.put(
          `users/${this.userInfo.id}/role`,
          {
            rid: this.selectedRoleId
          }
        )

        if (res.meta.status !== 200) {
          return this.$message.error('更新角色失败')
        }

        this.$message.success('更新角色成功')

        this.getUserList()

        this.setRoleDialogVisible = false

      }
    },
    //监听分配角色对话框关闭事件
    setRoleDialogClosed(){
      this.selectedRoleId = ''
      this.userInfo = {}
    }
  }
}
</script>
<style lang="less" scoped></style>
